Friction-clutch.



J. H. STULL.

FRICTION CLUTCH.

APPLICATION FILED NOV. 19. 1914 Patented Oct. 12, 1915.

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FRICTION-CLUTCH.

To all whom it may concern;

Be it known [that I, JACOB H. STU na citizen of the United Statedresiding at Fremont, in the county of Sandusky and State of Ohio have invented certain new and use, ful Improvements in Frictlon-Clutches and I'do declare the follow ngto be alfull, clear,

and exact description ofthe inven'tiomsuch as will enable othersskilledqinflthe art to which it appertains' to, make and use the same. w

This invention relates'to' a friction clutch for loose pulleys and the like and has for its object to provide a device of this kind for mounting a pulleyfnormally loose on a line or countershaft and whereby the pillley may be frictionally engaged and re volved with the shaft and disengaged at will Another object is to provide a clutch of this character which consistsgof compara tively few parts which render it simple and durable.

These objects are accomplished by the construction and combination of parts as hereafter described and illustrated in the drawings in which; Figure l'represents of a clutch constructed in accordance with this invention and mountedon a'shaft and having a pulleymounted loosely thereon;

the parts of the clutch being in position to release the pulley from frictional engagement therewith; Fig. 2 is a similar view showing the parts in position fri'ctionally engaging the pulley; Fig; 3 is a transverse section taken on the line of Fig. 2:, Fig. 4 is a detail perspective view of one of the operating members; Fig. 5 is a side elevation thereof with the parts in the position shown in Fig. 2. l y

In the embodiment illustrated a shaft S is shown which may be either a line or a coun ter shaft and onwhich is loosely mounted v an elongated sleeve 1 hav1ng an annular flange or collar 2 atone end thereof and a pulleyl fixed. thereto preferablynear the other end. a

A clutch member 3 "in'the form of a disk is fixed tothis sleeve 1 between the pulley P and the flange 2 preferably adjacent said pulley and'has a hollow eentralportion. olfset from the operating or working face thereof to form in conjunction: with the cooperating clutch diska chamb'er l for a pure pose to be described; Another sleeve 5 of Specification of Letters Patent;

a longitudinal section Jason n. STULL, or FREMONT, oHIo.

Patented o r. 123, i915. Application filed November 19, .1914. Serial No. 873,023. Y

less length thanthe sleeve 1 keyed on the shaft S andto revolve therewith. Secured to the inner-fend. of this sleeve 5 is a clutch opposite the/portion ofthe disk 3 to form the chamber 4t in which is housed the flange 2 of the, sleeve 1 and operatingmembers 7. V

whichwill be hereinafterfurther described.

Loosely mounted onthis sleeve 5 is a collar 9 having a pair of diametricallydisposed radially extending apertured lugs lOand two pairs ofapertured cars 11 disposed diametrically to each other and extending/radially from saidcollar 9 in a .planeat right angles to the plane of the lugs 10.

Fulcrumed between each pair of ears 11 I are levers 12 having long arm portions 13 curved inwardly toward the shaft S and outward at their terminals to form cams 1st and which have short cam portions 15 adapted, as the long arms 13 are. moved outward, to move the collar. 9 outward on the sleeve 5 for a purpose to be described.

' The clutch. operating members7 are shown 5 in the form of rods which are mountedqat one end in the apertured lugs 10 of the collar 9 with their outer ends threaded and provided. with nuts 16 foradjusting said rods insa-id collar. The inner end of these rods are provided withiarcuate sleeve engaging arms 17 which are here shown securedintermediately of their ends to theinner ends of the rods 7 and which are designed to partially encircle the sleeve 1 between the flange 2 thereof and the clutch member 3 as is shown clearly in Fig. 1; These arcuate sleeve engaging members are disposed dia metrically opposite to each other and are designed to engage the flange 2 of the sleeve 1 and move said sleeves Qand 5 toward each other thereby forcing the friction disks 3 and 6-intogripping or frictional contact. 1

The disk 6 is provided with oppositely disposed apertures in the concaved portion thereof through which the rods 7 are 'designed to freely move.

I A coiled spring 22 is disposed on'the shaft S betweenthe flangeZ of the sleeve 1 and the inner face of the disk 6 and exerts its tension to normally force said disks apart. 4

Aisuitable friction material 18 such :as leather or fiber is preferably interposed be :tween the contact faces of the disks 3, and 6 to provide a better friction surface shift collar or cone shaped mem'berhl) is slidably mounted on the shaft S adjacent the cam portions lat ofthe lever arms 13am which is provided with an annular groove 20 at its outer end to receive the yoke of a shift lever 21. The tapered or cone shape'd portion of this member 19. is disposed ,'adja--' 'cent the levers12 and is adapted to be wedged between the cam portion 14; ofjthe arms 13 as shown in Fig. 5 by a throw of the member 19:by the, shift lever, 21. g

In'the use of this clutch when the parts are in the position shown inFig. 1 and itis desired to bring the members; of the clutch intov gripping relation theshiftlever 21ismoved inward thereby sliding: the cone shaped collar 19,under the cam portions of the levers 12 thus forcing said levers "out ward and moving the collar 9. away from the clutch member 6 which, causes the arcuate gripping arms" 17 to engage the flange 2 .of the sleeve 1 and move the sleeve 5 toward sleeve 1 therebyforcing the clutch members or disks 3 and 6 together into gripping. relation. and frictionally locking the pulley to the shaft tov rotation therewith. v

To'disengage the pulley it is obvious that the shift lever 21 will be moved in the opprovide for its 'posite direction to disengage the collar 19 from the lever12 and when in thisxposition the coiled spring 22 which is disposed between the flange2 of sleeve 1 and the disk 6 will force; said disk 6 away from disk 3 thereby disengaging said disks and pering the pulley.

mitting the shaft to revolve without affect- V I claim as'my invention:

1. A friction clutch comprising an elongated sleeve adapted to be loosely mounted on a shaft and havinga flange at onerend, a friction disk secured to said sleeveat a point spaced inward from said flange, a

second sleeve adapted to be disposed .on the shaft in alinement' with said first mentioned sleeve and. having a friction disk on its inner end, said diskha'ving apertures there- -in,a collar slidably mounted on said second sleeve outside saidfric'tion disk, means car ried'by said collar and extending through vthe apertures in the friction disk of said sleeve'and having elements for engaging the said second sleeve and having adjustable" elements extending through the disk on said second sleeve, said elements andsaid first mentioned sleeve havlng cooperating engaging means, and means for-moving said collar to bring said cooperating means into action for moving said disks toward each other into frictional engagement.

A friction clutch comprising an elongated sleeve having'a friction disk fixed thereto at a point intermediate of its ends,

said disk having a concaved central portion, a second sleevejghaving a friction disk mounted on one end,'a collar mounted on said second sleeve and having adjustable elements extending through the" disk "on said second sleeve, said elements and said first mentioned. sleeve having i cooperating engaging means, levers fulcrumed on said a collar and extending laterally therefroin in outward directiomand means for engaging said levers to movejsaid collar outwardly and thereby interlock the engaging elements carried by the two sleeves;

4. A friction clutch comprising two, iongitudinally alining sleeves having friction disks ,0n. :t heir adjacent ends, the disk on onesleeve beil g spacedfrom the inner end thereof, a longitudinally 1 slidingcollar mounted on the other sleeve and" having rods adj ustably. mounted therein, rods eXtending through the disk 7 on the sleeve on which said collar is mounted and having inturned arcuate arms ontheir inner ends, and a flange on the other sleeve for engagement by said arms, and meansfor moving said collar to bring said armsjand flange into forcible engagement thereby moving the disks toward each other intofrictional:

engagement.

5. In a friction clutch 'tlie combinati on with a shaft, asleeve slidablykeyed to said shaft and provided with a friction disk at one end, said disk having apertures therein adjacent saidshaft, a collar mounted on said sleeve, longitudinally adjustable memhers-carried by, said collar, and 7 extending through the apertures in said disks with their inner ends extending 1 inwardly projecting arcuate arms, another sleeve mounted on said" shaft and having a flange atits inner end,fa friction disk secured thereto and spaced from .p o ded t lat l y said flange, the arcuate was carried by the first mentioned sleeve, encircling said last mentioned sleeve between said friction disk and flange, cam levers carried by said collar, and means forengaging said levers to retract said collar and thereby move said sleeves toward each other-to bring their friction disks'into grippingirelation. 4

6. In a friction clutch the combination -with a shaft, a sleeve slidably keyed ito said shaft and provided withfa friction disk at 1 one end, said disk having aperturestherein adjacent said shaft, a collar; mounted on said sleeve, longitudinally adjustable memhas carried by said collar and extending through f the apertures in said" disks with their inner ds pr ided wit ete te ys said collar andthereby move saidsleeves" toward each other to bring their friction Copies of this patent may be obtained for disks into gripping relation, and a coiled expansion spring arranged on said shaft between said. sleeves for forcing them nor mally apart.

vIn testimony whereof I have hereunto set n my hand in presence of tWo subscribing Witnesses.

' JACOB H. STULL.

Witnesses G. B. CARR, A. E. STULL.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

